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Finding the Fourth Proportional to 630,127.80, 945,278.10 and 209,359.80

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Solution

The fourth proportional to 630,127.80, 945,278.10 and 209,359.80 is: 314,068.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,127.80 : 945,278.10 = 209,359.80 : x
  2. Step 2: Convert to fraction form
    630,127.80/945,278.10 = 209,359.80/x
  3. Step 3: Cross multiply
    630,127.80x = 945,278.10 × 209,359.80
  4. Step 4: Simplify right side
    630,127.80x = 197,903,233,960.38
  5. Step 5: Solve for x
    x = 197,903,233,960.38/630,127.80
  6. Step 6: Final answer
    x = 314,068.41

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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.