Home / 405,316.78-559,327.43-221,547.14

Finding the Fourth Proportional to 405,316.78, 559,327.43 and 221,547.14

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Solution

The fourth proportional to 405,316.78, 559,327.43 and 221,547.14 is: 305,729.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,316.78 : 559,327.43 = 221,547.14 : x
  2. Step 2: Convert to fraction form
    405,316.78/559,327.43 = 221,547.14/x
  3. Step 3: Cross multiply
    405,316.78x = 559,327.43 × 221,547.14
  4. Step 4: Simplify right side
    405,316.78x = 123,917,391,332.32
  5. Step 5: Solve for x
    x = 123,917,391,332.32/405,316.78
  6. Step 6: Final answer
    x = 305,729.74

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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.