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Finding the Fourth Proportional to 282,347.46, 389,640.18 and 155,031.27

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Solution

The fourth proportional to 282,347.46, 389,640.18 and 155,031.27 is: 213,943.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,347.46 : 389,640.18 = 155,031.27 : x
  2. Step 2: Convert to fraction form
    282,347.46/389,640.18 = 155,031.27/x
  3. Step 3: Cross multiply
    282,347.46x = 389,640.18 × 155,031.27
  4. Step 4: Simplify right side
    282,347.46x = 60,406,411,948.43
  5. Step 5: Solve for x
    x = 60,406,411,948.43/282,347.46
  6. Step 6: Final answer
    x = 213,943.53

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1.5x scale

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.