Home / 480,335.07-720,488.94-143,378.51

Finding the Fourth Proportional to 480,335.07, 720,488.94 and 143,378.51

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Solution

The fourth proportional to 480,335.07, 720,488.94 and 143,378.51 is: 215,063.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,335.07 : 720,488.94 = 143,378.51 : x
  2. Step 2: Convert to fraction form
    480,335.07/720,488.94 = 143,378.51/x
  3. Step 3: Cross multiply
    480,335.07x = 720,488.94 × 143,378.51
  4. Step 4: Simplify right side
    480,335.07x = 103,302,630,688.68
  5. Step 5: Solve for x
    x = 103,302,630,688.68/480,335.07
  6. Step 6: Final answer
    x = 215,063.69

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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.