Home / 291,139.86-401,791.32-176,428.55

Finding the Fourth Proportional to 291,139.86, 401,791.32 and 176,428.55

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Solution

The fourth proportional to 291,139.86, 401,791.32 and 176,428.55 is: 243,482.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,139.86 : 401,791.32 = 176,428.55 : x
  2. Step 2: Convert to fraction form
    291,139.86/401,791.32 = 176,428.55/x
  3. Step 3: Cross multiply
    291,139.86x = 401,791.32 × 176,428.55
  4. Step 4: Simplify right side
    291,139.86x = 70,887,457,981.23
  5. Step 5: Solve for x
    x = 70,887,457,981.23/291,139.86
  6. Step 6: Final answer
    x = 243,482.49

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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.