Home / 355,008.08-489,785.60-227,752.40

Finding the Fourth Proportional to 355,008.08, 489,785.60 and 227,752.40

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Solution

The fourth proportional to 355,008.08, 489,785.60 and 227,752.40 is: 314,217.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,008.08 : 489,785.60 = 227,752.40 : x
  2. Step 2: Convert to fraction form
    355,008.08/489,785.60 = 227,752.40/x
  3. Step 3: Cross multiply
    355,008.08x = 489,785.60 × 227,752.40
  4. Step 4: Simplify right side
    355,008.08x = 111,549,845,885.44
  5. Step 5: Solve for x
    x = 111,549,845,885.44/355,008.08
  6. Step 6: Final answer
    x = 314,217.77

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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.