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Finding the Fourth Proportional to 316,720.32, 437,074.16 and 173,482.76

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Solution

The fourth proportional to 316,720.32, 437,074.16 and 173,482.76 is: 239,406.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,720.32 : 437,074.16 = 173,482.76 : x
  2. Step 2: Convert to fraction form
    316,720.32/437,074.16 = 173,482.76/x
  3. Step 3: Cross multiply
    316,720.32x = 437,074.16 × 173,482.76
  4. Step 4: Simplify right side
    316,720.32x = 75,824,828,548.70
  5. Step 5: Solve for x
    x = 75,824,828,548.70/316,720.32
  6. Step 6: Final answer
    x = 239,406.26

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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.