Home / 317,820.50-438,409.10-190,422.32

Finding the Fourth Proportional to 317,820.50, 438,409.10 and 190,422.32

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Solution

The fourth proportional to 317,820.50, 438,409.10 and 190,422.32 is: 262,673.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,820.50 : 438,409.10 = 190,422.32 : x
  2. Step 2: Convert to fraction form
    317,820.50/438,409.10 = 190,422.32/x
  3. Step 3: Cross multiply
    317,820.50x = 438,409.10 × 190,422.32
  4. Step 4: Simplify right side
    317,820.50x = 83,482,877,931.11
  5. Step 5: Solve for x
    x = 83,482,877,931.11/317,820.50
  6. Step 6: Final answer
    x = 262,673.04

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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.