Home / 385,995.20-578,988.60-158,240.02

Finding the Fourth Proportional to 385,995.20, 578,988.60 and 158,240.02

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Solution

The fourth proportional to 385,995.20, 578,988.60 and 158,240.02 is: 237,358.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,995.20 : 578,988.60 = 158,240.02 : x
  2. Step 2: Convert to fraction form
    385,995.20/578,988.60 = 158,240.02/x
  3. Step 3: Cross multiply
    385,995.20x = 578,988.60 × 158,240.02
  4. Step 4: Simplify right side
    385,995.20x = 91,619,167,643.77
  5. Step 5: Solve for x
    x = 91,619,167,643.77/385,995.20
  6. Step 6: Final answer
    x = 237,358.31

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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.