Home / 487,957.91-731,965.57-188,440.05

Finding the Fourth Proportional to 487,957.91, 731,965.57 and 188,440.05

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Solution

The fourth proportional to 487,957.91, 731,965.57 and 188,440.05 is: 282,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,957.91 : 731,965.57 = 188,440.05 : x
  2. Step 2: Convert to fraction form
    487,957.91/731,965.57 = 188,440.05/x
  3. Step 3: Cross multiply
    487,957.91x = 731,965.57 × 188,440.05
  4. Step 4: Simplify right side
    487,957.91x = 137,931,628,137.98
  5. Step 5: Solve for x
    x = 137,931,628,137.98/487,957.91
  6. Step 6: Final answer
    x = 282,671.16

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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.