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Finding the Fourth Proportional to 346,887.60, 520,428.60 and 169,400.40

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Solution

The fourth proportional to 346,887.60, 520,428.60 and 169,400.40 is: 254,148.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,887.60 : 520,428.60 = 169,400.40 : x
  2. Step 2: Convert to fraction form
    346,887.60/520,428.60 = 169,400.40/x
  3. Step 3: Cross multiply
    346,887.60x = 520,428.60 × 169,400.40
  4. Step 4: Simplify right side
    346,887.60x = 88,160,813,011.44
  5. Step 5: Solve for x
    x = 88,160,813,011.44/346,887.60
  6. Step 6: Final answer
    x = 254,148.07

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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.