Home / 390,009.12-584,968.32-109,550.40

Finding the Fourth Proportional to 390,009.12, 584,968.32 and 109,550.40

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Solution

The fourth proportional to 390,009.12, 584,968.32 and 109,550.40 is: 164,312.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,009.12 : 584,968.32 = 109,550.40 : x
  2. Step 2: Convert to fraction form
    390,009.12/584,968.32 = 109,550.40/x
  3. Step 3: Cross multiply
    390,009.12x = 584,968.32 × 109,550.40
  4. Step 4: Simplify right side
    390,009.12x = 64,083,513,443.33
  5. Step 5: Solve for x
    x = 64,083,513,443.33/390,009.12
  6. Step 6: Final answer
    x = 164,312.86

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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.