Home / 315,857.25-435,904.02-178,070.16

Finding the Fourth Proportional to 315,857.25, 435,904.02 and 178,070.16

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Solution

The fourth proportional to 315,857.25, 435,904.02 and 178,070.16 is: 245,748.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,857.25 : 435,904.02 = 178,070.16 : x
  2. Step 2: Convert to fraction form
    315,857.25/435,904.02 = 178,070.16/x
  3. Step 3: Cross multiply
    315,857.25x = 435,904.02 × 178,070.16
  4. Step 4: Simplify right side
    315,857.25x = 77,621,498,586.04
  5. Step 5: Solve for x
    x = 77,621,498,586.04/315,857.25
  6. Step 6: Final answer
    x = 245,748.67

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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.