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Finding the Fourth Proportional to 666,030.60, 999,043.56 and 239,565.72

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Solution

The fourth proportional to 666,030.60, 999,043.56 and 239,565.72 is: 359,347.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,030.60 : 999,043.56 = 239,565.72 : x
  2. Step 2: Convert to fraction form
    666,030.60/999,043.56 = 239,565.72/x
  3. Step 3: Cross multiply
    666,030.60x = 999,043.56 × 239,565.72
  4. Step 4: Simplify right side
    666,030.60x = 239,336,589,762.76
  5. Step 5: Solve for x
    x = 239,336,589,762.76/666,030.60
  6. Step 6: Final answer
    x = 359,347.74

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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.