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Finding the Fourth Proportional to 316,326.84, 474,492.08 and 129,338.34

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Solution

The fourth proportional to 316,326.84, 474,492.08 and 129,338.34 is: 194,008.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,326.84 : 474,492.08 = 129,338.34 : x
  2. Step 2: Convert to fraction form
    316,326.84/474,492.08 = 129,338.34/x
  3. Step 3: Cross multiply
    316,326.84x = 474,492.08 × 129,338.34
  4. Step 4: Simplify right side
    316,326.84x = 61,370,017,970.35
  5. Step 5: Solve for x
    x = 61,370,017,970.35/316,326.84
  6. Step 6: Final answer
    x = 194,008.25

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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.