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Finding the Fourth Proportional to 258,866.40, 357,259.74 and 151,429.62

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Solution

The fourth proportional to 258,866.40, 357,259.74 and 151,429.62 is: 208,986.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,866.40 : 357,259.74 = 151,429.62 : x
  2. Step 2: Convert to fraction form
    258,866.40/357,259.74 = 151,429.62/x
  3. Step 3: Cross multiply
    258,866.40x = 357,259.74 × 151,429.62
  4. Step 4: Simplify right side
    258,866.40x = 54,099,706,669.50
  5. Step 5: Solve for x
    x = 54,099,706,669.50/258,866.40
  6. Step 6: Final answer
    x = 208,986.98

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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.