Home / 282,818.61-390,279.69-155,493.21

Finding the Fourth Proportional to 282,818.61, 390,279.69 and 155,493.21

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Solution

The fourth proportional to 282,818.61, 390,279.69 and 155,493.21 is: 214,575.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,818.61 : 390,279.69 = 155,493.21 : x
  2. Step 2: Convert to fraction form
    282,818.61/390,279.69 = 155,493.21/x
  3. Step 3: Cross multiply
    282,818.61x = 390,279.69 × 155,493.21
  4. Step 4: Simplify right side
    282,818.61x = 60,685,841,795.90
  5. Step 5: Solve for x
    x = 60,685,841,795.90/282,818.61
  6. Step 6: Final answer
    x = 214,575.14

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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.