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Finding the Fourth Proportional to 630,054.80, 945,089.40 and 156,741.20

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Solution

The fourth proportional to 630,054.80, 945,089.40 and 156,741.20 is: 235,113.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,054.80 : 945,089.40 = 156,741.20 : x
  2. Step 2: Convert to fraction form
    630,054.80/945,089.40 = 156,741.20/x
  3. Step 3: Cross multiply
    630,054.80x = 945,089.40 × 156,741.20
  4. Step 4: Simplify right side
    630,054.80x = 148,134,446,663.28
  5. Step 5: Solve for x
    x = 148,134,446,663.28/630,054.80
  6. Step 6: Final answer
    x = 235,113.59

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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.