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Finding the Fourth Proportional to 557,106.61, 835,561.08 and 253,430.05

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Solution

The fourth proportional to 557,106.61, 835,561.08 and 253,430.05 is: 380,100.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,106.61 : 835,561.08 = 253,430.05 : x
  2. Step 2: Convert to fraction form
    557,106.61/835,561.08 = 253,430.05/x
  3. Step 3: Cross multiply
    557,106.61x = 835,561.08 × 253,430.05
  4. Step 4: Simplify right side
    557,106.61x = 211,756,286,282.45
  5. Step 5: Solve for x
    x = 211,756,286,282.45/557,106.61
  6. Step 6: Final answer
    x = 380,100.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.