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Finding the Fourth Proportional to 288,555.36, 432,879.60 and 88,875.72

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Solution

The fourth proportional to 288,555.36, 432,879.60 and 88,875.72 is: 133,327.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,555.36 : 432,879.60 = 88,875.72 : x
  2. Step 2: Convert to fraction form
    288,555.36/432,879.60 = 88,875.72/x
  3. Step 3: Cross multiply
    288,555.36x = 432,879.60 × 88,875.72
  4. Step 4: Simplify right side
    288,555.36x = 38,472,486,123.31
  5. Step 5: Solve for x
    x = 38,472,486,123.31/288,555.36
  6. Step 6: Final answer
    x = 133,327.92

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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.