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Finding the Fourth Proportional to 315,218.93, 472,777.62 and 90,528.26

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Solution

The fourth proportional to 315,218.93, 472,777.62 and 90,528.26 is: 135,777.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,218.93 : 472,777.62 = 90,528.26 : x
  2. Step 2: Convert to fraction form
    315,218.93/472,777.62 = 90,528.26/x
  3. Step 3: Cross multiply
    315,218.93x = 472,777.62 × 90,528.26
  4. Step 4: Simplify right side
    315,218.93x = 42,799,732,941.65
  5. Step 5: Solve for x
    x = 42,799,732,941.65/315,218.93
  6. Step 6: Final answer
    x = 135,777.80

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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.