Home / 312,411.57-431,130.02-169,171.62

Finding the Fourth Proportional to 312,411.57, 431,130.02 and 169,171.62

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Solution

The fourth proportional to 312,411.57, 431,130.02 and 169,171.62 is: 233,457.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,411.57 : 431,130.02 = 169,171.62 : x
  2. Step 2: Convert to fraction form
    312,411.57/431,130.02 = 169,171.62/x
  3. Step 3: Cross multiply
    312,411.57x = 431,130.02 × 169,171.62
  4. Step 4: Simplify right side
    312,411.57x = 72,934,963,068.17
  5. Step 5: Solve for x
    x = 72,934,963,068.17/312,411.57
  6. Step 6: Final answer
    x = 233,457.94

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1.5x scale

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.