Home / 307,290.16-423,909.67-205,340.64

Finding the Fourth Proportional to 307,290.16, 423,909.67 and 205,340.64

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Solution

The fourth proportional to 307,290.16, 423,909.67 and 205,340.64 is: 283,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,290.16 : 423,909.67 = 205,340.64 : x
  2. Step 2: Convert to fraction form
    307,290.16/423,909.67 = 205,340.64/x
  3. Step 3: Cross multiply
    307,290.16x = 423,909.67 × 205,340.64
  4. Step 4: Simplify right side
    307,290.16x = 87,045,881,221.99
  5. Step 5: Solve for x
    x = 87,045,881,221.99/307,290.16
  6. Step 6: Final answer
    x = 283,269.35

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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.