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Finding the Fourth Proportional to 307,389.88, 424,228.52 and 229,730.65

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Solution

The fourth proportional to 307,389.88, 424,228.52 and 229,730.65 is: 317,051.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,389.88 : 424,228.52 = 229,730.65 : x
  2. Step 2: Convert to fraction form
    307,389.88/424,228.52 = 229,730.65/x
  3. Step 3: Cross multiply
    307,389.88x = 424,228.52 × 229,730.65
  4. Step 4: Simplify right side
    307,389.88x = 97,458,293,648.14
  5. Step 5: Solve for x
    x = 97,458,293,648.14/307,389.88
  6. Step 6: Final answer
    x = 317,051.08

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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.