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Finding the Fourth Proportional to 205,813.40, 308,547.30 and 107,317.40

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Solution

The fourth proportional to 205,813.40, 308,547.30 and 107,317.40 is: 160,886.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,813.40 : 308,547.30 = 107,317.40 : x
  2. Step 2: Convert to fraction form
    205,813.40/308,547.30 = 107,317.40/x
  3. Step 3: Cross multiply
    205,813.40x = 308,547.30 × 107,317.40
  4. Step 4: Simplify right side
    205,813.40x = 33,112,494,013.02
  5. Step 5: Solve for x
    x = 33,112,494,013.02/205,813.40
  6. Step 6: Final answer
    x = 160,886.00

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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.