Home / 287,142.10-396,259.88-158,095.60

Finding the Fourth Proportional to 287,142.10, 396,259.88 and 158,095.60

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Solution

The fourth proportional to 287,142.10, 396,259.88 and 158,095.60 is: 218,174.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,142.10 : 396,259.88 = 158,095.60 : x
  2. Step 2: Convert to fraction form
    287,142.10/396,259.88 = 158,095.60/x
  3. Step 3: Cross multiply
    287,142.10x = 396,259.88 × 158,095.60
  4. Step 4: Simplify right side
    287,142.10x = 62,646,943,484.53
  5. Step 5: Solve for x
    x = 62,646,943,484.53/287,142.10
  6. Step 6: Final answer
    x = 218,174.01

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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.