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Finding the Fourth Proportional to 474,661.69, 655,030.74 and 256,870.20

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Solution

The fourth proportional to 474,661.69, 655,030.74 and 256,870.20 is: 354,479.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,661.69 : 655,030.74 = 256,870.20 : x
  2. Step 2: Convert to fraction form
    474,661.69/655,030.74 = 256,870.20/x
  3. Step 3: Cross multiply
    474,661.69x = 655,030.74 × 256,870.20
  4. Step 4: Simplify right side
    474,661.69x = 168,257,877,189.95
  5. Step 5: Solve for x
    x = 168,257,877,189.95/474,661.69
  6. Step 6: Final answer
    x = 354,479.58

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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.