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Finding the Fourth Proportional to 257,048.64, 385,561.62 and 70,060.14

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Solution

The fourth proportional to 257,048.64, 385,561.62 and 70,060.14 is: 105,087.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,048.64 : 385,561.62 = 70,060.14 : x
  2. Step 2: Convert to fraction form
    257,048.64/385,561.62 = 70,060.14/x
  3. Step 3: Cross multiply
    257,048.64x = 385,561.62 × 70,060.14
  4. Step 4: Simplify right side
    257,048.64x = 27,012,501,075.83
  5. Step 5: Solve for x
    x = 27,012,501,075.83/257,048.64
  6. Step 6: Final answer
    x = 105,087.12

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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.