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Finding the Fourth Proportional to 287,501.76, 396,740.88 and 160,174.08

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Solution

The fourth proportional to 287,501.76, 396,740.88 and 160,174.08 is: 221,033.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,501.76 : 396,740.88 = 160,174.08 : x
  2. Step 2: Convert to fraction form
    287,501.76/396,740.88 = 160,174.08/x
  3. Step 3: Cross multiply
    287,501.76x = 396,740.88 × 160,174.08
  4. Step 4: Simplify right side
    287,501.76x = 63,547,605,452.39
  5. Step 5: Solve for x
    x = 63,547,605,452.39/287,501.76
  6. Step 6: Final answer
    x = 221,033.80

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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.