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Finding the Fourth Proportional to 630,281.25, 945,430.08 and 209,557.13

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Solution

The fourth proportional to 630,281.25, 945,430.08 and 209,557.13 is: 314,338.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,281.25 : 945,430.08 = 209,557.13 : x
  2. Step 2: Convert to fraction form
    630,281.25/945,430.08 = 209,557.13/x
  3. Step 3: Cross multiply
    630,281.25x = 945,430.08 × 209,557.13
  4. Step 4: Simplify right side
    630,281.25x = 198,121,608,667.48
  5. Step 5: Solve for x
    x = 198,121,608,667.48/630,281.25
  6. Step 6: Final answer
    x = 314,338.41

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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.