Home / 373,543.12-515,533.78-212,422.40

Finding the Fourth Proportional to 373,543.12, 515,533.78 and 212,422.40

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Solution

The fourth proportional to 373,543.12, 515,533.78 and 212,422.40 is: 293,168.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,543.12 : 515,533.78 = 212,422.40 : x
  2. Step 2: Convert to fraction form
    373,543.12/515,533.78 = 212,422.40/x
  3. Step 3: Cross multiply
    373,543.12x = 515,533.78 × 212,422.40
  4. Step 4: Simplify right side
    373,543.12x = 109,510,922,828.67
  5. Step 5: Solve for x
    x = 109,510,922,828.67/373,543.12
  6. Step 6: Final answer
    x = 293,168.09

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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.