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Finding the Fourth Proportional to 450,284.88, 621,332.28 and 256,717.56

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Solution

The fourth proportional to 450,284.88, 621,332.28 and 256,717.56 is: 354,235.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,284.88 : 621,332.28 = 256,717.56 : x
  2. Step 2: Convert to fraction form
    450,284.88/621,332.28 = 256,717.56/x
  3. Step 3: Cross multiply
    450,284.88x = 621,332.28 × 256,717.56
  4. Step 4: Simplify right side
    450,284.88x = 159,506,906,870.84
  5. Step 5: Solve for x
    x = 159,506,906,870.84/450,284.88
  6. Step 6: Final answer
    x = 354,235.54

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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.