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Finding the Fourth Proportional to 395,307.40, 592,961.10 and 99,819.40

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Solution

The fourth proportional to 395,307.40, 592,961.10 and 99,819.40 is: 149,729.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,307.40 : 592,961.10 = 99,819.40 : x
  2. Step 2: Convert to fraction form
    395,307.40/592,961.10 = 99,819.40/x
  3. Step 3: Cross multiply
    395,307.40x = 592,961.10 × 99,819.40
  4. Step 4: Simplify right side
    395,307.40x = 59,189,021,225.34
  5. Step 5: Solve for x
    x = 59,189,021,225.34/395,307.40
  6. Step 6: Final answer
    x = 149,729.10

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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.