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Finding the Fourth Proportional to 288,068.10, 432,102.15 and 260,511.90

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Solution

The fourth proportional to 288,068.10, 432,102.15 and 260,511.90 is: 390,767.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,068.10 : 432,102.15 = 260,511.90 : x
  2. Step 2: Convert to fraction form
    288,068.10/432,102.15 = 260,511.90/x
  3. Step 3: Cross multiply
    288,068.10x = 432,102.15 × 260,511.90
  4. Step 4: Simplify right side
    288,068.10x = 112,567,752,090.59
  5. Step 5: Solve for x
    x = 112,567,752,090.59/288,068.10
  6. Step 6: Final answer
    x = 390,767.85

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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.