Home / 243,655.08-336,057.84-209,720.40

Finding the Fourth Proportional to 243,655.08, 336,057.84 and 209,720.40

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Solution

The fourth proportional to 243,655.08, 336,057.84 and 209,720.40 is: 289,253.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,655.08 : 336,057.84 = 209,720.40 : x
  2. Step 2: Convert to fraction form
    243,655.08/336,057.84 = 209,720.40/x
  3. Step 3: Cross multiply
    243,655.08x = 336,057.84 × 209,720.40
  4. Step 4: Simplify right side
    243,655.08x = 70,478,184,627.94
  5. Step 5: Solve for x
    x = 70,478,184,627.94/243,655.08
  6. Step 6: Final answer
    x = 289,253.91

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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.