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Finding the Fourth Proportional to 212,077.40, 318,116.10 and 64,333.40

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Solution

The fourth proportional to 212,077.40, 318,116.10 and 64,333.40 is: 96,500.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,077.40 : 318,116.10 = 64,333.40 : x
  2. Step 2: Convert to fraction form
    212,077.40/318,116.10 = 64,333.40/x
  3. Step 3: Cross multiply
    212,077.40x = 318,116.10 × 64,333.40
  4. Step 4: Simplify right side
    212,077.40x = 20,465,490,307.74
  5. Step 5: Solve for x
    x = 20,465,490,307.74/212,077.40
  6. Step 6: Final answer
    x = 96,500.10

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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.