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Finding the Fourth Proportional to 287,302.32, 430,953.30 and 76,934.88

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Solution

The fourth proportional to 287,302.32, 430,953.30 and 76,934.88 is: 115,402.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,302.32 : 430,953.30 = 76,934.88 : x
  2. Step 2: Convert to fraction form
    287,302.32/430,953.30 = 76,934.88/x
  3. Step 3: Cross multiply
    287,302.32x = 430,953.30 × 76,934.88
  4. Step 4: Simplify right side
    287,302.32x = 33,155,340,421.10
  5. Step 5: Solve for x
    x = 33,155,340,421.10/287,302.32
  6. Step 6: Final answer
    x = 115,402.27

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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.