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Finding the Fourth Proportional to 357,386.58, 491,626.26 and 298,928.88

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Solution

The fourth proportional to 357,386.58, 491,626.26 and 298,928.88 is: 411,210.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,386.58 : 491,626.26 = 298,928.88 : x
  2. Step 2: Convert to fraction form
    357,386.58/491,626.26 = 298,928.88/x
  3. Step 3: Cross multiply
    357,386.58x = 491,626.26 × 298,928.88
  4. Step 4: Simplify right side
    357,386.58x = 146,961,287,280.39
  5. Step 5: Solve for x
    x = 146,961,287,280.39/357,386.58
  6. Step 6: Final answer
    x = 411,210.98

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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.