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Finding the Fourth Proportional to 340,041.65, 469,238.68 and 189,128.93

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Solution

The fourth proportional to 340,041.65, 469,238.68 and 189,128.93 is: 260,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,041.65 : 469,238.68 = 189,128.93 : x
  2. Step 2: Convert to fraction form
    340,041.65/469,238.68 = 189,128.93/x
  3. Step 3: Cross multiply
    340,041.65x = 469,238.68 × 189,128.93
  4. Step 4: Simplify right side
    340,041.65x = 88,746,609,463.01
  5. Step 5: Solve for x
    x = 88,746,609,463.01/340,041.65
  6. Step 6: Final answer
    x = 260,987.47

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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.