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Finding the Fourth Proportional to 310,173.84, 428,009.67 and 174,176.87

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Solution

The fourth proportional to 310,173.84, 428,009.67 and 174,176.87 is: 240,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,173.84 : 428,009.67 = 174,176.87 : x
  2. Step 2: Convert to fraction form
    310,173.84/428,009.67 = 174,176.87/x
  3. Step 3: Cross multiply
    310,173.84x = 428,009.67 × 174,176.87
  4. Step 4: Simplify right side
    310,173.84x = 74,549,382,510.28
  5. Step 5: Solve for x
    x = 74,549,382,510.28/310,173.84
  6. Step 6: Final answer
    x = 240,347.10

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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.