Home / 258,001.40-387,002.10-132,030.20

Finding the Fourth Proportional to 258,001.40, 387,002.10 and 132,030.20

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Solution

The fourth proportional to 258,001.40, 387,002.10 and 132,030.20 is: 198,045.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,001.40 : 387,002.10 = 132,030.20 : x
  2. Step 2: Convert to fraction form
    258,001.40/387,002.10 = 132,030.20/x
  3. Step 3: Cross multiply
    258,001.40x = 387,002.10 × 132,030.20
  4. Step 4: Simplify right side
    258,001.40x = 51,095,964,663.42
  5. Step 5: Solve for x
    x = 51,095,964,663.42/258,001.40
  6. Step 6: Final answer
    x = 198,045.30

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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.