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Finding the Fourth Proportional to 356,491.40, 534,737.10 and 286,507.40

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Solution

The fourth proportional to 356,491.40, 534,737.10 and 286,507.40 is: 429,761.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,491.40 : 534,737.10 = 286,507.40 : x
  2. Step 2: Convert to fraction form
    356,491.40/534,737.10 = 286,507.40/x
  3. Step 3: Cross multiply
    356,491.40x = 534,737.10 × 286,507.40
  4. Step 4: Simplify right side
    356,491.40x = 153,206,136,204.54
  5. Step 5: Solve for x
    x = 153,206,136,204.54/356,491.40
  6. Step 6: Final answer
    x = 429,761.10

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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.