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Finding the Fourth Proportional to 385,218.10, 577,827.15 and 259,246.90

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Solution

The fourth proportional to 385,218.10, 577,827.15 and 259,246.90 is: 388,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,218.10 : 577,827.15 = 259,246.90 : x
  2. Step 2: Convert to fraction form
    385,218.10/577,827.15 = 259,246.90/x
  3. Step 3: Cross multiply
    385,218.10x = 577,827.15 × 259,246.90
  4. Step 4: Simplify right side
    385,218.10x = 149,799,897,373.34
  5. Step 5: Solve for x
    x = 149,799,897,373.34/385,218.10
  6. Step 6: Final answer
    x = 388,870.35

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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.