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Finding the Fourth Proportional to 145,569.60, 218,062.80 and 98,330.40

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Solution

The fourth proportional to 145,569.60, 218,062.80 and 98,330.40 is: 147,298.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,569.60 : 218,062.80 = 98,330.40 : x
  2. Step 2: Convert to fraction form
    145,569.60/218,062.80 = 98,330.40/x
  3. Step 3: Cross multiply
    145,569.60x = 218,062.80 × 98,330.40
  4. Step 4: Simplify right side
    145,569.60x = 21,442,202,349.12
  5. Step 5: Solve for x
    x = 21,442,202,349.12/145,569.60
  6. Step 6: Final answer
    x = 147,298.63

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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.