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Finding the Fourth Proportional to 207,075.65, 285,059.18 and 153,259.25

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Solution

The fourth proportional to 207,075.65, 285,059.18 and 153,259.25 is: 210,975.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,075.65 : 285,059.18 = 153,259.25 : x
  2. Step 2: Convert to fraction form
    207,075.65/285,059.18 = 153,259.25/x
  3. Step 3: Cross multiply
    207,075.65x = 285,059.18 × 153,259.25
  4. Step 4: Simplify right side
    207,075.65x = 43,687,953,940.82
  5. Step 5: Solve for x
    x = 43,687,953,940.82/207,075.65
  6. Step 6: Final answer
    x = 210,975.82

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1.5x scale

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.