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Finding the Fourth Proportional to 316,165.04, 436,307.28 and 188,915.12

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Solution

The fourth proportional to 316,165.04, 436,307.28 and 188,915.12 is: 260,702.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,165.04 : 436,307.28 = 188,915.12 : x
  2. Step 2: Convert to fraction form
    316,165.04/436,307.28 = 188,915.12/x
  3. Step 3: Cross multiply
    316,165.04x = 436,307.28 × 188,915.12
  4. Step 4: Simplify right side
    316,165.04x = 82,425,042,158.07
  5. Step 5: Solve for x
    x = 82,425,042,158.07/316,165.04
  6. Step 6: Final answer
    x = 260,702.58

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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.