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Finding the Fourth Proportional to 307,555.56, 424,417.05 and 180,315.90

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Solution

The fourth proportional to 307,555.56, 424,417.05 and 180,315.90 is: 248,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,555.56 : 424,417.05 = 180,315.90 : x
  2. Step 2: Convert to fraction form
    307,555.56/424,417.05 = 180,315.90/x
  3. Step 3: Cross multiply
    307,555.56x = 424,417.05 × 180,315.90
  4. Step 4: Simplify right side
    307,555.56x = 76,529,142,346.10
  5. Step 5: Solve for x
    x = 76,529,142,346.10/307,555.56
  6. Step 6: Final answer
    x = 248,830.30

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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.