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Finding the Fourth Proportional to 262,128.30, 393,192.45 and 144,030.30

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Solution

The fourth proportional to 262,128.30, 393,192.45 and 144,030.30 is: 216,045.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,128.30 : 393,192.45 = 144,030.30 : x
  2. Step 2: Convert to fraction form
    262,128.30/393,192.45 = 144,030.30/x
  3. Step 3: Cross multiply
    262,128.30x = 393,192.45 × 144,030.30
  4. Step 4: Simplify right side
    262,128.30x = 56,631,626,531.24
  5. Step 5: Solve for x
    x = 56,631,626,531.24/262,128.30
  6. Step 6: Final answer
    x = 216,045.45

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Similar ratio
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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.