Home / 207,386.40-310,849.20-89,037.60

Finding the Fourth Proportional to 207,386.40, 310,849.20 and 89,037.60

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Solution

The fourth proportional to 207,386.40, 310,849.20 and 89,037.60 is: 133,457.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,386.40 : 310,849.20 = 89,037.60 : x
  2. Step 2: Convert to fraction form
    207,386.40/310,849.20 = 89,037.60/x
  3. Step 3: Cross multiply
    207,386.40x = 310,849.20 × 89,037.60
  4. Step 4: Simplify right side
    207,386.40x = 27,677,266,729.92
  5. Step 5: Solve for x
    x = 27,677,266,729.92/207,386.40
  6. Step 6: Final answer
    x = 133,457.48

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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.