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Finding the Fourth Proportional to 450,259.20, 621,391.41 and 256,671.52

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Solution

The fourth proportional to 450,259.20, 621,391.41 and 256,671.52 is: 354,225.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,259.20 : 621,391.41 = 256,671.52 : x
  2. Step 2: Convert to fraction form
    450,259.20/621,391.41 = 256,671.52/x
  3. Step 3: Cross multiply
    450,259.20x = 621,391.41 × 256,671.52
  4. Step 4: Simplify right side
    450,259.20x = 159,493,477,533.86
  5. Step 5: Solve for x
    x = 159,493,477,533.86/450,259.20
  6. Step 6: Final answer
    x = 354,225.92

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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.