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Finding the Fourth Proportional to 360,020.10, 540,030.15 and 259,968.90

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Solution

The fourth proportional to 360,020.10, 540,030.15 and 259,968.90 is: 389,953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,020.10 : 540,030.15 = 259,968.90 : x
  2. Step 2: Convert to fraction form
    360,020.10/540,030.15 = 259,968.90/x
  3. Step 3: Cross multiply
    360,020.10x = 540,030.15 × 259,968.90
  4. Step 4: Simplify right side
    360,020.10x = 140,391,044,062.34
  5. Step 5: Solve for x
    x = 140,391,044,062.34/360,020.10
  6. Step 6: Final answer
    x = 389,953.35

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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.