Home / 389,931.60-584,897.40-202,918.80

Finding the Fourth Proportional to 389,931.60, 584,897.40 and 202,918.80

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Solution

The fourth proportional to 389,931.60, 584,897.40 and 202,918.80 is: 304,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,931.60 : 584,897.40 = 202,918.80 : x
  2. Step 2: Convert to fraction form
    389,931.60/584,897.40 = 202,918.80/x
  3. Step 3: Cross multiply
    389,931.60x = 584,897.40 × 202,918.80
  4. Step 4: Simplify right side
    389,931.60x = 118,686,678,531.12
  5. Step 5: Solve for x
    x = 118,686,678,531.12/389,931.60
  6. Step 6: Final answer
    x = 304,378.20

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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.