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Finding the Fourth Proportional to 145,618.63, 218,428.04 and 40,437.61

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Solution

The fourth proportional to 145,618.63, 218,428.04 and 40,437.61 is: 60,656.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,618.63 : 218,428.04 = 40,437.61 : x
  2. Step 2: Convert to fraction form
    145,618.63/218,428.04 = 40,437.61/x
  3. Step 3: Cross multiply
    145,618.63x = 218,428.04 × 40,437.61
  4. Step 4: Simplify right side
    145,618.63x = 8,832,707,894.58
  5. Step 5: Solve for x
    x = 8,832,707,894.58/145,618.63
  6. Step 6: Final answer
    x = 60,656.44

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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.