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Finding the Fourth Proportional to 316,385.40, 473,886.90 and 245,710.20

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Solution

The fourth proportional to 316,385.40, 473,886.90 and 245,710.20 is: 368,028.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,385.40 : 473,886.90 = 245,710.20 : x
  2. Step 2: Convert to fraction form
    316,385.40/473,886.90 = 245,710.20/x
  3. Step 3: Cross multiply
    316,385.40x = 473,886.90 × 245,710.20
  4. Step 4: Simplify right side
    316,385.40x = 116,438,844,976.38
  5. Step 5: Solve for x
    x = 116,438,844,976.38/316,385.40
  6. Step 6: Final answer
    x = 368,028.50

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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.