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Finding the Fourth Proportional to 357,738.32, 536,466.64 and 129,980.16

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Solution

The fourth proportional to 357,738.32, 536,466.64 and 129,980.16 is: 194,919.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,738.32 : 536,466.64 = 129,980.16 : x
  2. Step 2: Convert to fraction form
    357,738.32/536,466.64 = 129,980.16/x
  3. Step 3: Cross multiply
    357,738.32x = 536,466.64 × 129,980.16
  4. Step 4: Simplify right side
    357,738.32x = 69,730,019,701.86
  5. Step 5: Solve for x
    x = 69,730,019,701.86/357,738.32
  6. Step 6: Final answer
    x = 194,919.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.