Home / 259,316.29-388,752.56-99,506.90

Finding the Fourth Proportional to 259,316.29, 388,752.56 and 99,506.90

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Solution

The fourth proportional to 259,316.29, 388,752.56 and 99,506.90 is: 149,175.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,316.29 : 388,752.56 = 99,506.90 : x
  2. Step 2: Convert to fraction form
    259,316.29/388,752.56 = 99,506.90/x
  3. Step 3: Cross multiply
    259,316.29x = 388,752.56 × 99,506.90
  4. Step 4: Simplify right side
    259,316.29x = 38,683,561,615.13
  5. Step 5: Solve for x
    x = 38,683,561,615.13/259,316.29
  6. Step 6: Final answer
    x = 149,175.21

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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.