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Finding the Fourth Proportional to 472,686.02, 652,308.75 and 257,830.70

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Solution

The fourth proportional to 472,686.02, 652,308.75 and 257,830.70 is: 355,807.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,686.02 : 652,308.75 = 257,830.70 : x
  2. Step 2: Convert to fraction form
    472,686.02/652,308.75 = 257,830.70/x
  3. Step 3: Cross multiply
    472,686.02x = 652,308.75 × 257,830.70
  4. Step 4: Simplify right side
    472,686.02x = 168,185,221,628.63
  5. Step 5: Solve for x
    x = 168,185,221,628.63/472,686.02
  6. Step 6: Final answer
    x = 355,807.48

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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.