Home / 287,225.12-396,384.54-159,900.68

Finding the Fourth Proportional to 287,225.12, 396,384.54 and 159,900.68

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Solution

The fourth proportional to 287,225.12, 396,384.54 and 159,900.68 is: 220,670.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,225.12 : 396,384.54 = 159,900.68 : x
  2. Step 2: Convert to fraction form
    287,225.12/396,384.54 = 159,900.68/x
  3. Step 3: Cross multiply
    287,225.12x = 396,384.54 × 159,900.68
  4. Step 4: Simplify right side
    287,225.12x = 63,382,157,487.49
  5. Step 5: Solve for x
    x = 63,382,157,487.49/287,225.12
  6. Step 6: Final answer
    x = 220,670.66

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1.5x scale

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.