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Finding the Fourth Proportional to 346,920.80, 520,429.80 and 147,239.60

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Solution

The fourth proportional to 346,920.80, 520,429.80 and 147,239.60 is: 220,880.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,920.80 : 520,429.80 = 147,239.60 : x
  2. Step 2: Convert to fraction form
    346,920.80/520,429.80 = 147,239.60/x
  3. Step 3: Cross multiply
    346,920.80x = 520,429.80 × 147,239.60
  4. Step 4: Simplify right side
    346,920.80x = 76,627,875,580.08
  5. Step 5: Solve for x
    x = 76,627,875,580.08/346,920.80
  6. Step 6: Final answer
    x = 220,880.03

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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.