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Finding the Fourth Proportional to 346,816.60, 520,013.70 and 136,202.20

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Solution

The fourth proportional to 346,816.60, 520,013.70 and 136,202.20 is: 204,220.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,816.60 : 520,013.70 = 136,202.20 : x
  2. Step 2: Convert to fraction form
    346,816.60/520,013.70 = 136,202.20/x
  3. Step 3: Cross multiply
    346,816.60x = 520,013.70 × 136,202.20
  4. Step 4: Simplify right side
    346,816.60x = 70,827,009,970.14
  5. Step 5: Solve for x
    x = 70,827,009,970.14/346,816.60
  6. Step 6: Final answer
    x = 204,220.36

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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.