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Finding the Fourth Proportional to 390,804.75, 586,207.13 and 95,316.75

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Solution

The fourth proportional to 390,804.75, 586,207.13 and 95,316.75 is: 142,975.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,804.75 : 586,207.13 = 95,316.75 : x
  2. Step 2: Convert to fraction form
    390,804.75/586,207.13 = 95,316.75/x
  3. Step 3: Cross multiply
    390,804.75x = 586,207.13 × 95,316.75
  4. Step 4: Simplify right side
    390,804.75x = 55,875,357,981.84
  5. Step 5: Solve for x
    x = 55,875,357,981.84/390,804.75
  6. Step 6: Final answer
    x = 142,975.13

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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.