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Finding the Fourth Proportional to 346,433.80, 519,261.90 and 146,720.20

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Solution

The fourth proportional to 346,433.80, 519,261.90 and 146,720.20 is: 219,915.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,433.80 : 519,261.90 = 146,720.20 : x
  2. Step 2: Convert to fraction form
    346,433.80/519,261.90 = 146,720.20/x
  3. Step 3: Cross multiply
    346,433.80x = 519,261.90 × 146,720.20
  4. Step 4: Simplify right side
    346,433.80x = 76,186,209,820.38
  5. Step 5: Solve for x
    x = 76,186,209,820.38/346,433.80
  6. Step 6: Final answer
    x = 219,915.64

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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.