Home / 310,781.47-428,756.96-174,784.22

Finding the Fourth Proportional to 310,781.47, 428,756.96 and 174,784.22

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Solution

The fourth proportional to 310,781.47, 428,756.96 and 174,784.22 is: 241,133.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,781.47 : 428,756.96 = 174,784.22 : x
  2. Step 2: Convert to fraction form
    310,781.47/428,756.96 = 174,784.22/x
  3. Step 3: Cross multiply
    310,781.47x = 428,756.96 × 174,784.22
  4. Step 4: Simplify right side
    310,781.47x = 74,939,950,823.17
  5. Step 5: Solve for x
    x = 74,939,950,823.17/310,781.47
  6. Step 6: Final answer
    x = 241,133.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.