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Finding the Fourth Proportional to 402,055.72, 602,991.44 and 239,995.52

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Solution

The fourth proportional to 402,055.72, 602,991.44 and 239,995.52 is: 359,938.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,055.72 : 602,991.44 = 239,995.52 : x
  2. Step 2: Convert to fraction form
    402,055.72/602,991.44 = 239,995.52/x
  3. Step 3: Cross multiply
    402,055.72x = 602,991.44 × 239,995.52
  4. Step 4: Simplify right side
    402,055.72x = 144,715,244,198.35
  5. Step 5: Solve for x
    x = 144,715,244,198.35/402,055.72
  6. Step 6: Final answer
    x = 359,938.28

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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.