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Finding the Fourth Proportional to 346,718.60, 520,077.90 and 323,390.60

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Solution

The fourth proportional to 346,718.60, 520,077.90 and 323,390.60 is: 485,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,718.60 : 520,077.90 = 323,390.60 : x
  2. Step 2: Convert to fraction form
    346,718.60/520,077.90 = 323,390.60/x
  3. Step 3: Cross multiply
    346,718.60x = 520,077.90 × 323,390.60
  4. Step 4: Simplify right side
    346,718.60x = 168,188,304,127.74
  5. Step 5: Solve for x
    x = 168,188,304,127.74/346,718.60
  6. Step 6: Final answer
    x = 485,085.90

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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.