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Finding the Fourth Proportional to 346,800.80, 519,812.40 and 147,087.20

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Solution

The fourth proportional to 346,800.80, 519,812.40 and 147,087.20 is: 220,465.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,800.80 : 519,812.40 = 147,087.20 : x
  2. Step 2: Convert to fraction form
    346,800.80/519,812.40 = 147,087.20/x
  3. Step 3: Cross multiply
    346,800.80x = 519,812.40 × 147,087.20
  4. Step 4: Simplify right side
    346,800.80x = 76,457,750,441.28
  5. Step 5: Solve for x
    x = 76,457,750,441.28/346,800.80
  6. Step 6: Final answer
    x = 220,465.90

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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.