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Finding the Fourth Proportional to 160,338.29, 240,489 and 42,018.95

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Solution

The fourth proportional to 160,338.29, 240,489 and 42,018.95 is: 63,023.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,338.29 : 240,489 = 42,018.95 : x
  2. Step 2: Convert to fraction form
    160,338.29/240,489 = 42,018.95/x
  3. Step 3: Cross multiply
    160,338.29x = 240,489 × 42,018.95
  4. Step 4: Simplify right side
    160,338.29x = 10,105,095,867.77
  5. Step 5: Solve for x
    x = 10,105,095,867.77/160,338.29
  6. Step 6: Final answer
    x = 63,023.60

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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.