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Finding the Fourth Proportional to 346,854.60, 520,070.70 and 136,240.20

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Solution

The fourth proportional to 346,854.60, 520,070.70 and 136,240.20 is: 204,277.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,854.60 : 520,070.70 = 136,240.20 : x
  2. Step 2: Convert to fraction form
    346,854.60/520,070.70 = 136,240.20/x
  3. Step 3: Cross multiply
    346,854.60x = 520,070.70 × 136,240.20
  4. Step 4: Simplify right side
    346,854.60x = 70,854,536,182.14
  5. Step 5: Solve for x
    x = 70,854,536,182.14/346,854.60
  6. Step 6: Final answer
    x = 204,277.34

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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.