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Finding the Fourth Proportional to 421,686.04, 581,952.54 and 242,895.64

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Solution

The fourth proportional to 421,686.04, 581,952.54 and 242,895.64 is: 335,210.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,686.04 : 581,952.54 = 242,895.64 : x
  2. Step 2: Convert to fraction form
    421,686.04/581,952.54 = 242,895.64/x
  3. Step 3: Cross multiply
    421,686.04x = 581,952.54 × 242,895.64
  4. Step 4: Simplify right side
    421,686.04x = 141,353,734,652.93
  5. Step 5: Solve for x
    x = 141,353,734,652.93/421,686.04
  6. Step 6: Final answer
    x = 335,210.85

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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.