Home / 278,551.36-384,397.14-157,689.53

Finding the Fourth Proportional to 278,551.36, 384,397.14 and 157,689.53

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Solution

The fourth proportional to 278,551.36, 384,397.14 and 157,689.53 is: 217,609.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,551.36 : 384,397.14 = 157,689.53 : x
  2. Step 2: Convert to fraction form
    278,551.36/384,397.14 = 157,689.53/x
  3. Step 3: Cross multiply
    278,551.36x = 384,397.14 × 157,689.53
  4. Step 4: Simplify right side
    278,551.36x = 60,615,406,613.02
  5. Step 5: Solve for x
    x = 60,615,406,613.02/278,551.36
  6. Step 6: Final answer
    x = 217,609.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.