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Finding the Fourth Proportional to 212,017.59, 318,024.76 and 54,245.79

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Solution

The fourth proportional to 212,017.59, 318,024.76 and 54,245.79 is: 81,368.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,017.59 : 318,024.76 = 54,245.79 : x
  2. Step 2: Convert to fraction form
    212,017.59/318,024.76 = 54,245.79/x
  3. Step 3: Cross multiply
    212,017.59x = 318,024.76 × 54,245.79
  4. Step 4: Simplify right side
    212,017.59x = 17,251,502,484.41
  5. Step 5: Solve for x
    x = 17,251,502,484.41/212,017.59
  6. Step 6: Final answer
    x = 81,368.26

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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.