Home / 428,965.61-591,972.53-237,980.36

Finding the Fourth Proportional to 428,965.61, 591,972.53 and 237,980.36

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Solution

The fourth proportional to 428,965.61, 591,972.53 and 237,980.36 is: 328,412.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,965.61 : 591,972.53 = 237,980.36 : x
  2. Step 2: Convert to fraction form
    428,965.61/591,972.53 = 237,980.36/x
  3. Step 3: Cross multiply
    428,965.61x = 591,972.53 × 237,980.36
  4. Step 4: Simplify right side
    428,965.61x = 140,877,836,089.54
  5. Step 5: Solve for x
    x = 140,877,836,089.54/428,965.61
  6. Step 6: Final answer
    x = 328,412.89

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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.