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Finding the Fourth Proportional to 309,547.78, 464,273.78 and 127,197.07

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Solution

The fourth proportional to 309,547.78, 464,273.78 and 127,197.07 is: 190,775.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,547.78 : 464,273.78 = 127,197.07 : x
  2. Step 2: Convert to fraction form
    309,547.78/464,273.78 = 127,197.07/x
  3. Step 3: Cross multiply
    309,547.78x = 464,273.78 × 127,197.07
  4. Step 4: Simplify right side
    309,547.78x = 59,054,262,697.15
  5. Step 5: Solve for x
    x = 59,054,262,697.15/309,547.78
  6. Step 6: Final answer
    x = 190,775.92

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1.5x scale

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.