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Finding the Fourth Proportional to 612,880.38, 919,317.51 and 157,471.20

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Solution

The fourth proportional to 612,880.38, 919,317.51 and 157,471.20 is: 236,206.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,880.38 : 919,317.51 = 157,471.20 : x
  2. Step 2: Convert to fraction form
    612,880.38/919,317.51 = 157,471.20/x
  3. Step 3: Cross multiply
    612,880.38x = 919,317.51 × 157,471.20
  4. Step 4: Simplify right side
    612,880.38x = 144,766,031,480.71
  5. Step 5: Solve for x
    x = 144,766,031,480.71/612,880.38
  6. Step 6: Final answer
    x = 236,206.01

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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.