Home / 258,746.10-387,316.44-140,123.22

Finding the Fourth Proportional to 258,746.10, 387,316.44 and 140,123.22

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Solution

The fourth proportional to 258,746.10, 387,316.44 and 140,123.22 is: 209,750.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,746.10 : 387,316.44 = 140,123.22 : x
  2. Step 2: Convert to fraction form
    258,746.10/387,316.44 = 140,123.22/x
  3. Step 3: Cross multiply
    258,746.10x = 387,316.44 × 140,123.22
  4. Step 4: Simplify right side
    258,746.10x = 54,272,026,731.74
  5. Step 5: Solve for x
    x = 54,272,026,731.74/258,746.10
  6. Step 6: Final answer
    x = 209,750.12

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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.