Home / 638,655.17-958,056.86-212,229.05

Finding the Fourth Proportional to 638,655.17, 958,056.86 and 212,229.05

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Solution

The fourth proportional to 638,655.17, 958,056.86 and 212,229.05 is: 318,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,655.17 : 958,056.86 = 212,229.05 : x
  2. Step 2: Convert to fraction form
    638,655.17/958,056.86 = 212,229.05/x
  3. Step 3: Cross multiply
    638,655.17x = 958,056.86 × 212,229.05
  4. Step 4: Simplify right side
    638,655.17x = 203,327,492,984.07
  5. Step 5: Solve for x
    x = 203,327,492,984.07/638,655.17
  6. Step 6: Final answer
    x = 318,368.20

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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.