Home / 309,176.78-426,663.02-171,364.51

Finding the Fourth Proportional to 309,176.78, 426,663.02 and 171,364.51

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Solution

The fourth proportional to 309,176.78, 426,663.02 and 171,364.51 is: 236,482.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,176.78 : 426,663.02 = 171,364.51 : x
  2. Step 2: Convert to fraction form
    309,176.78/426,663.02 = 171,364.51/x
  3. Step 3: Cross multiply
    309,176.78x = 426,663.02 × 171,364.51
  4. Step 4: Simplify right side
    309,176.78x = 73,114,898,719.17
  5. Step 5: Solve for x
    x = 73,114,898,719.17/309,176.78
  6. Step 6: Final answer
    x = 236,482.50

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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.