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Finding the Fourth Proportional to 288,307.60, 432,460.38 and 77,945.50

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Solution

The fourth proportional to 288,307.60, 432,460.38 and 77,945.50 is: 116,917.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,307.60 : 432,460.38 = 77,945.50 : x
  2. Step 2: Convert to fraction form
    288,307.60/432,460.38 = 77,945.50/x
  3. Step 3: Cross multiply
    288,307.60x = 432,460.38 × 77,945.50
  4. Step 4: Simplify right side
    288,307.60x = 33,708,340,549.29
  5. Step 5: Solve for x
    x = 33,708,340,549.29/288,307.60
  6. Step 6: Final answer
    x = 116,917.97

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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.