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Finding the Fourth Proportional to 356,246.70, 534,175.65 and 145,646.70

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Solution

The fourth proportional to 356,246.70, 534,175.65 and 145,646.70 is: 218,390.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,246.70 : 534,175.65 = 145,646.70 : x
  2. Step 2: Convert to fraction form
    356,246.70/534,175.65 = 145,646.70/x
  3. Step 3: Cross multiply
    356,246.70x = 534,175.65 × 145,646.70
  4. Step 4: Simplify right side
    356,246.70x = 77,800,920,642.86
  5. Step 5: Solve for x
    x = 77,800,920,642.86/356,246.70
  6. Step 6: Final answer
    x = 218,390.57

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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.