Home / 287,541.65-396,830.30-158,503.07

Finding the Fourth Proportional to 287,541.65, 396,830.30 and 158,503.07

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Solution

The fourth proportional to 287,541.65, 396,830.30 and 158,503.07 is: 218,746.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,541.65 : 396,830.30 = 158,503.07 : x
  2. Step 2: Convert to fraction form
    287,541.65/396,830.30 = 158,503.07/x
  3. Step 3: Cross multiply
    287,541.65x = 396,830.30 × 158,503.07
  4. Step 4: Simplify right side
    287,541.65x = 62,898,821,018.58
  5. Step 5: Solve for x
    x = 62,898,821,018.58/287,541.65
  6. Step 6: Final answer
    x = 218,746.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.