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Finding the Fourth Proportional to 212,666.70, 319,000.05 and 64,922.70

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Solution

The fourth proportional to 212,666.70, 319,000.05 and 64,922.70 is: 97,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,666.70 : 319,000.05 = 64,922.70 : x
  2. Step 2: Convert to fraction form
    212,666.70/319,000.05 = 64,922.70/x
  3. Step 3: Cross multiply
    212,666.70x = 319,000.05 × 64,922.70
  4. Step 4: Simplify right side
    212,666.70x = 20,710,344,546.14
  5. Step 5: Solve for x
    x = 20,710,344,546.14/212,666.70
  6. Step 6: Final answer
    x = 97,384.05

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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.