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Finding the Fourth Proportional to 260,097.71, 390,154.57 and 70,557.33

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Solution

The fourth proportional to 260,097.71, 390,154.57 and 70,557.33 is: 105,838.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,097.71 : 390,154.57 = 70,557.33 : x
  2. Step 2: Convert to fraction form
    260,097.71/390,154.57 = 70,557.33/x
  3. Step 3: Cross multiply
    260,097.71x = 390,154.57 × 70,557.33
  4. Step 4: Simplify right side
    260,097.71x = 27,528,264,235.45
  5. Step 5: Solve for x
    x = 27,528,264,235.45/260,097.71
  6. Step 6: Final answer
    x = 105,838.17

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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.