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Finding the Fourth Proportional to 630,064.80, 945,104.40 and 156,751.20

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Solution

The fourth proportional to 630,064.80, 945,104.40 and 156,751.20 is: 235,128.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,064.80 : 945,104.40 = 156,751.20 : x
  2. Step 2: Convert to fraction form
    630,064.80/945,104.40 = 156,751.20/x
  3. Step 3: Cross multiply
    630,064.80x = 945,104.40 × 156,751.20
  4. Step 4: Simplify right side
    630,064.80x = 148,146,248,825.28
  5. Step 5: Solve for x
    x = 148,146,248,825.28/630,064.80
  6. Step 6: Final answer
    x = 235,128.59

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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.