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Finding the Fourth Proportional to 316,888.13, 475,012.35 and 198,642.51

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Solution

The fourth proportional to 316,888.13, 475,012.35 and 198,642.51 is: 297,763.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,888.13 : 475,012.35 = 198,642.51 : x
  2. Step 2: Convert to fraction form
    316,888.13/475,012.35 = 198,642.51/x
  3. Step 3: Cross multiply
    316,888.13x = 475,012.35 × 198,642.51
  4. Step 4: Simplify right side
    316,888.13x = 94,357,642,116.72
  5. Step 5: Solve for x
    x = 94,357,642,116.72/316,888.13
  6. Step 6: Final answer
    x = 297,763.26

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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.