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Finding the Fourth Proportional to 315,701.76, 435,674.88 and 181,574.40

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Solution

The fourth proportional to 315,701.76, 435,674.88 and 181,574.40 is: 250,576.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,701.76 : 435,674.88 = 181,574.40 : x
  2. Step 2: Convert to fraction form
    315,701.76/435,674.88 = 181,574.40/x
  3. Step 3: Cross multiply
    315,701.76x = 435,674.88 × 181,574.40
  4. Step 4: Simplify right side
    315,701.76x = 79,107,404,931.07
  5. Step 5: Solve for x
    x = 79,107,404,931.07/315,701.76
  6. Step 6: Final answer
    x = 250,576.38

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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.