Home / 420,447.02-630,295.56-154,145.48

Finding the Fourth Proportional to 420,447.02, 630,295.56 and 154,145.48

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Solution

The fourth proportional to 420,447.02, 630,295.56 and 154,145.48 is: 231,080.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,447.02 : 630,295.56 = 154,145.48 : x
  2. Step 2: Convert to fraction form
    420,447.02/630,295.56 = 154,145.48/x
  3. Step 3: Cross multiply
    420,447.02x = 630,295.56 × 154,145.48
  4. Step 4: Simplify right side
    420,447.02x = 97,157,211,638.07
  5. Step 5: Solve for x
    x = 97,157,211,638.07/420,447.02
  6. Step 6: Final answer
    x = 231,080.75

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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.