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Finding the Fourth Proportional to 424,154.82, 636,215.58 and 143,672.06

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Solution

The fourth proportional to 424,154.82, 636,215.58 and 143,672.06 is: 215,502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,154.82 : 636,215.58 = 143,672.06 : x
  2. Step 2: Convert to fraction form
    424,154.82/636,215.58 = 143,672.06/x
  3. Step 3: Cross multiply
    424,154.82x = 636,215.58 × 143,672.06
  4. Step 4: Simplify right side
    424,154.82x = 91,406,402,982.69
  5. Step 5: Solve for x
    x = 91,406,402,982.69/424,154.82
  6. Step 6: Final answer
    x = 215,502.45

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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.