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Finding the Fourth Proportional to 402,070.42, 554,901.42 and 230,004.28

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Solution

The fourth proportional to 402,070.42, 554,901.42 and 230,004.28 is: 317,431.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,070.42 : 554,901.42 = 230,004.28 : x
  2. Step 2: Convert to fraction form
    402,070.42/554,901.42 = 230,004.28/x
  3. Step 3: Cross multiply
    402,070.42x = 554,901.42 × 230,004.28
  4. Step 4: Simplify right side
    402,070.42x = 127,629,701,578.08
  5. Step 5: Solve for x
    x = 127,629,701,578.08/402,070.42
  6. Step 6: Final answer
    x = 317,431.21

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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.