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Finding the Fourth Proportional to 630,034.80, 945,059.40 and 156,721.20

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Solution

The fourth proportional to 630,034.80, 945,059.40 and 156,721.20 is: 235,083.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,034.80 : 945,059.40 = 156,721.20 : x
  2. Step 2: Convert to fraction form
    630,034.80/945,059.40 = 156,721.20/x
  3. Step 3: Cross multiply
    630,034.80x = 945,059.40 × 156,721.20
  4. Step 4: Simplify right side
    630,034.80x = 148,110,843,239.28
  5. Step 5: Solve for x
    x = 148,110,843,239.28/630,034.80
  6. Step 6: Final answer
    x = 235,083.59

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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.