Home / 306,130.20-459,195.30-139,918.20

Finding the Fourth Proportional to 306,130.20, 459,195.30 and 139,918.20

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Solution

The fourth proportional to 306,130.20, 459,195.30 and 139,918.20 is: 209,877.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,130.20 : 459,195.30 = 139,918.20 : x
  2. Step 2: Convert to fraction form
    306,130.20/459,195.30 = 139,918.20/x
  3. Step 3: Cross multiply
    306,130.20x = 459,195.30 × 139,918.20
  4. Step 4: Simplify right side
    306,130.20x = 64,249,779,824.46
  5. Step 5: Solve for x
    x = 64,249,779,824.46/306,130.20
  6. Step 6: Final answer
    x = 209,877.30

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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.