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Finding the Fourth Proportional to 308,967.70, 463,451.55 and 131,430.10

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Solution

The fourth proportional to 308,967.70, 463,451.55 and 131,430.10 is: 197,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,967.70 : 463,451.55 = 131,430.10 : x
  2. Step 2: Convert to fraction form
    308,967.70/463,451.55 = 131,430.10/x
  3. Step 3: Cross multiply
    308,967.70x = 463,451.55 × 131,430.10
  4. Step 4: Simplify right side
    308,967.70x = 60,911,483,561.66
  5. Step 5: Solve for x
    x = 60,911,483,561.66/308,967.70
  6. Step 6: Final answer
    x = 197,145.15

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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.