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Finding the Fourth Proportional to 288,598.05, 432,897.06 and 78,230.52

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Solution

The fourth proportional to 288,598.05, 432,897.06 and 78,230.52 is: 117,345.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,598.05 : 432,897.06 = 78,230.52 : x
  2. Step 2: Convert to fraction form
    288,598.05/432,897.06 = 78,230.52/x
  3. Step 3: Cross multiply
    288,598.05x = 432,897.06 × 78,230.52
  4. Step 4: Simplify right side
    288,598.05x = 33,865,762,110.27
  5. Step 5: Solve for x
    x = 33,865,762,110.27/288,598.05
  6. Step 6: Final answer
    x = 117,345.78

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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.