Home / 315,312.45-435,140.79-179,366.10

Finding the Fourth Proportional to 315,312.45, 435,140.79 and 179,366.10

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Solution

The fourth proportional to 315,312.45, 435,140.79 and 179,366.10 is: 247,530.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,312.45 : 435,140.79 = 179,366.10 : x
  2. Step 2: Convert to fraction form
    315,312.45/435,140.79 = 179,366.10/x
  3. Step 3: Cross multiply
    315,312.45x = 435,140.79 × 179,366.10
  4. Step 4: Simplify right side
    315,312.45x = 78,049,506,453.22
  5. Step 5: Solve for x
    x = 78,049,506,453.22/315,312.45
  6. Step 6: Final answer
    x = 247,530.68

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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.