Home / 317,715.12-438,417.63-177,999.84

Finding the Fourth Proportional to 317,715.12, 438,417.63 and 177,999.84

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Solution

The fourth proportional to 317,715.12, 438,417.63 and 177,999.84 is: 245,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,715.12 : 438,417.63 = 177,999.84 : x
  2. Step 2: Convert to fraction form
    317,715.12/438,417.63 = 177,999.84/x
  3. Step 3: Cross multiply
    317,715.12x = 438,417.63 × 177,999.84
  4. Step 4: Simplify right side
    317,715.12x = 78,038,267,993.18
  5. Step 5: Solve for x
    x = 78,038,267,993.18/317,715.12
  6. Step 6: Final answer
    x = 245,623.40

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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.