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Finding the Fourth Proportional to 245,630.10, 368,445.15 and 140,459.70

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Solution

The fourth proportional to 245,630.10, 368,445.15 and 140,459.70 is: 210,689.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,630.10 : 368,445.15 = 140,459.70 : x
  2. Step 2: Convert to fraction form
    245,630.10/368,445.15 = 140,459.70/x
  3. Step 3: Cross multiply
    245,630.10x = 368,445.15 × 140,459.70
  4. Step 4: Simplify right side
    245,630.10x = 51,751,695,235.46
  5. Step 5: Solve for x
    x = 51,751,695,235.46/245,630.10
  6. Step 6: Final answer
    x = 210,689.55

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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.