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Finding the Fourth Proportional to 402,210.64, 555,051.80 and 223,362.64

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Solution

The fourth proportional to 402,210.64, 555,051.80 and 223,362.64 is: 308,241.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,210.64 : 555,051.80 = 223,362.64 : x
  2. Step 2: Convert to fraction form
    402,210.64/555,051.80 = 223,362.64/x
  3. Step 3: Cross multiply
    402,210.64x = 555,051.80 × 223,362.64
  4. Step 4: Simplify right side
    402,210.64x = 123,977,835,384.75
  5. Step 5: Solve for x
    x = 123,977,835,384.75/402,210.64
  6. Step 6: Final answer
    x = 308,241.06

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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.