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Finding the Fourth Proportional to 630,066.40, 944,494.80 and 209,125.60

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Solution

The fourth proportional to 630,066.40, 944,494.80 and 209,125.60 is: 313,487.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,066.40 : 944,494.80 = 209,125.60 : x
  2. Step 2: Convert to fraction form
    630,066.40/944,494.80 = 209,125.60/x
  3. Step 3: Cross multiply
    630,066.40x = 944,494.80 × 209,125.60
  4. Step 4: Simplify right side
    630,066.40x = 197,518,041,746.88
  5. Step 5: Solve for x
    x = 197,518,041,746.88/630,066.40
  6. Step 6: Final answer
    x = 313,487.66

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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.