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Finding the Fourth Proportional to 398,260.80, 596,407.05 and 264,416.40

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Solution

The fourth proportional to 398,260.80, 596,407.05 and 264,416.40 is: 395,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,260.80 : 596,407.05 = 264,416.40 : x
  2. Step 2: Convert to fraction form
    398,260.80/596,407.05 = 264,416.40/x
  3. Step 3: Cross multiply
    398,260.80x = 596,407.05 × 264,416.40
  4. Step 4: Simplify right side
    398,260.80x = 157,699,805,095.62
  5. Step 5: Solve for x
    x = 157,699,805,095.62/398,260.80
  6. Step 6: Final answer
    x = 395,971.20

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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.