Home / 688,239.60-1,032,359.40-214,972.80

Finding the Fourth Proportional to 688,239.60, 1,032,359.40 and 214,972.80

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Solution

The fourth proportional to 688,239.60, 1,032,359.40 and 214,972.80 is: 322,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,239.60 : 1,032,359.40 = 214,972.80 : x
  2. Step 2: Convert to fraction form
    688,239.60/1,032,359.40 = 214,972.80/x
  3. Step 3: Cross multiply
    688,239.60x = 1,032,359.40 × 214,972.80
  4. Step 4: Simplify right side
    688,239.60x = 221,929,190,824.32
  5. Step 5: Solve for x
    x = 221,929,190,824.32/688,239.60
  6. Step 6: Final answer
    x = 322,459.20

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1.5x scale

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.