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Finding the Fourth Proportional to 420,555.79, 630,842.55 and 150,701.52

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Solution

The fourth proportional to 420,555.79, 630,842.55 and 150,701.52 is: 226,055.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,555.79 : 630,842.55 = 150,701.52 : x
  2. Step 2: Convert to fraction form
    420,555.79/630,842.55 = 150,701.52/x
  3. Step 3: Cross multiply
    420,555.79x = 630,842.55 × 150,701.52
  4. Step 4: Simplify right side
    420,555.79x = 95,068,931,165.68
  5. Step 5: Solve for x
    x = 95,068,931,165.68/420,555.79
  6. Step 6: Final answer
    x = 226,055.46

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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.