Home / 305,387.03-421,259.01-190,466.16

Finding the Fourth Proportional to 305,387.03, 421,259.01 and 190,466.16

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Solution

The fourth proportional to 305,387.03, 421,259.01 and 190,466.16 is: 262,734.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,387.03 : 421,259.01 = 190,466.16 : x
  2. Step 2: Convert to fraction form
    305,387.03/421,259.01 = 190,466.16/x
  3. Step 3: Cross multiply
    305,387.03x = 421,259.01 × 190,466.16
  4. Step 4: Simplify right side
    305,387.03x = 80,235,586,000.10
  5. Step 5: Solve for x
    x = 80,235,586,000.10/305,387.03
  6. Step 6: Final answer
    x = 262,734.10

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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.