Home / 343,218.30-514,827.45-319,890.30

Finding the Fourth Proportional to 343,218.30, 514,827.45 and 319,890.30

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Solution

The fourth proportional to 343,218.30, 514,827.45 and 319,890.30 is: 479,835.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,218.30 : 514,827.45 = 319,890.30 : x
  2. Step 2: Convert to fraction form
    343,218.30/514,827.45 = 319,890.30/x
  3. Step 3: Cross multiply
    343,218.30x = 514,827.45 × 319,890.30
  4. Step 4: Simplify right side
    343,218.30x = 164,688,307,428.74
  5. Step 5: Solve for x
    x = 164,688,307,428.74/343,218.30
  6. Step 6: Final answer
    x = 479,835.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.