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Finding the Fourth Proportional to 370,428.68, 555,643.02 and 89,944.04

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Solution

The fourth proportional to 370,428.68, 555,643.02 and 89,944.04 is: 134,916.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,428.68 : 555,643.02 = 89,944.04 : x
  2. Step 2: Convert to fraction form
    370,428.68/555,643.02 = 89,944.04/x
  3. Step 3: Cross multiply
    370,428.68x = 555,643.02 × 89,944.04
  4. Step 4: Simplify right side
    370,428.68x = 49,976,778,016.60
  5. Step 5: Solve for x
    x = 49,976,778,016.60/370,428.68
  6. Step 6: Final answer
    x = 134,916.06

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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.