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Finding the Fourth Proportional to 388,036.64, 535,482.64 and 226,987.04

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Solution

The fourth proportional to 388,036.64, 535,482.64 and 226,987.04 is: 313,237.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,036.64 : 535,482.64 = 226,987.04 : x
  2. Step 2: Convert to fraction form
    388,036.64/535,482.64 = 226,987.04/x
  3. Step 3: Cross multiply
    388,036.64x = 535,482.64 × 226,987.04
  4. Step 4: Simplify right side
    388,036.64x = 121,547,619,424.99
  5. Step 5: Solve for x
    x = 121,547,619,424.99/388,036.64
  6. Step 6: Final answer
    x = 313,237.48

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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.