Home / 399,235.60-598,853.40-209,622.70

Finding the Fourth Proportional to 399,235.60, 598,853.40 and 209,622.70

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Solution

The fourth proportional to 399,235.60, 598,853.40 and 209,622.70 is: 314,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,235.60 : 598,853.40 = 209,622.70 : x
  2. Step 2: Convert to fraction form
    399,235.60/598,853.40 = 209,622.70/x
  3. Step 3: Cross multiply
    399,235.60x = 598,853.40 × 209,622.70
  4. Step 4: Simplify right side
    399,235.60x = 125,533,266,612.18
  5. Step 5: Solve for x
    x = 125,533,266,612.18/399,235.60
  6. Step 6: Final answer
    x = 314,434.05

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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.