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Finding the Fourth Proportional to 290,688.98, 435,535.20 and 230,901.86

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Solution

The fourth proportional to 290,688.98, 435,535.20 and 230,901.86 is: 345,957.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,688.98 : 435,535.20 = 230,901.86 : x
  2. Step 2: Convert to fraction form
    290,688.98/435,535.20 = 230,901.86/x
  3. Step 3: Cross multiply
    290,688.98x = 435,535.20 × 230,901.86
  4. Step 4: Simplify right side
    290,688.98x = 100,565,888,864.31
  5. Step 5: Solve for x
    x = 100,565,888,864.31/290,688.98
  6. Step 6: Final answer
    x = 345,957.01

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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.