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Finding the Fourth Proportional to 309,398.88, 464,156.40 and 98,980.32

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Solution

The fourth proportional to 309,398.88, 464,156.40 and 98,980.32 is: 148,489.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,398.88 : 464,156.40 = 98,980.32 : x
  2. Step 2: Convert to fraction form
    309,398.88/464,156.40 = 98,980.32/x
  3. Step 3: Cross multiply
    309,398.88x = 464,156.40 × 98,980.32
  4. Step 4: Simplify right side
    309,398.88x = 45,942,349,002.05
  5. Step 5: Solve for x
    x = 45,942,349,002.05/309,398.88
  6. Step 6: Final answer
    x = 148,489.06

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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.