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Finding the Fourth Proportional to 331,386.80, 497,080.20 and 316,871.60

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Solution

The fourth proportional to 331,386.80, 497,080.20 and 316,871.60 is: 475,307.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,386.80 : 497,080.20 = 316,871.60 : x
  2. Step 2: Convert to fraction form
    331,386.80/497,080.20 = 316,871.60/x
  3. Step 3: Cross multiply
    331,386.80x = 497,080.20 × 316,871.60
  4. Step 4: Simplify right side
    331,386.80x = 157,510,598,302.32
  5. Step 5: Solve for x
    x = 157,510,598,302.32/331,386.80
  6. Step 6: Final answer
    x = 475,307.40

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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.