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Finding the Fourth Proportional to 288,139.02, 432,257.13 and 119,749.74

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Solution

The fourth proportional to 288,139.02, 432,257.13 and 119,749.74 is: 179,644.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,139.02 : 432,257.13 = 119,749.74 : x
  2. Step 2: Convert to fraction form
    288,139.02/432,257.13 = 119,749.74/x
  3. Step 3: Cross multiply
    288,139.02x = 432,257.13 × 119,749.74
  4. Step 4: Simplify right side
    288,139.02x = 51,762,678,930.65
  5. Step 5: Solve for x
    x = 51,762,678,930.65/288,139.02
  6. Step 6: Final answer
    x = 179,644.81

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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.