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Finding the Fourth Proportional to 258,762.42, 388,012.38 and 118,400.76

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Solution

The fourth proportional to 258,762.42, 388,012.38 and 118,400.76 is: 177,541.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,762.42 : 388,012.38 = 118,400.76 : x
  2. Step 2: Convert to fraction form
    258,762.42/388,012.38 = 118,400.76/x
  3. Step 3: Cross multiply
    258,762.42x = 388,012.38 × 118,400.76
  4. Step 4: Simplify right side
    258,762.42x = 45,940,960,681.41
  5. Step 5: Solve for x
    x = 45,940,960,681.41/258,762.42
  6. Step 6: Final answer
    x = 177,541.08

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1.5x scale

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.