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Finding the Fourth Proportional to 312,875.25, 469,327.46 and 91,259.25

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Solution

The fourth proportional to 312,875.25, 469,327.46 and 91,259.25 is: 136,893.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,875.25 : 469,327.46 = 91,259.25 : x
  2. Step 2: Convert to fraction form
    312,875.25/469,327.46 = 91,259.25/x
  3. Step 3: Cross multiply
    312,875.25x = 469,327.46 × 91,259.25
  4. Step 4: Simplify right side
    312,875.25x = 42,830,471,547.71
  5. Step 5: Solve for x
    x = 42,830,471,547.71/312,875.25
  6. Step 6: Final answer
    x = 136,893.13

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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.