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Finding the Fourth Proportional to 210,547.48, 290,543.28 and 115,054.96

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Solution

The fourth proportional to 210,547.48, 290,543.28 and 115,054.96 is: 158,769.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,547.48 : 290,543.28 = 115,054.96 : x
  2. Step 2: Convert to fraction form
    210,547.48/290,543.28 = 115,054.96/x
  3. Step 3: Cross multiply
    210,547.48x = 290,543.28 × 115,054.96
  4. Step 4: Simplify right side
    210,547.48x = 33,428,445,458.67
  5. Step 5: Solve for x
    x = 33,428,445,458.67/210,547.48
  6. Step 6: Final answer
    x = 158,769.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.