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Finding the Fourth Proportional to 402,903.78, 556,197.36 and 255,802.52

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Solution

The fourth proportional to 402,903.78, 556,197.36 and 255,802.52 is: 353,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,903.78 : 556,197.36 = 255,802.52 : x
  2. Step 2: Convert to fraction form
    402,903.78/556,197.36 = 255,802.52/x
  3. Step 3: Cross multiply
    402,903.78x = 556,197.36 × 255,802.52
  4. Step 4: Simplify right side
    402,903.78x = 142,276,686,305.35
  5. Step 5: Solve for x
    x = 142,276,686,305.35/402,903.78
  6. Step 6: Final answer
    x = 353,128.20

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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.