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Finding the Fourth Proportional to 607,255.81, 909,886.71 and 207,678.58

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Solution

The fourth proportional to 607,255.81, 909,886.71 and 207,678.58 is: 311,176.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,255.81 : 909,886.71 = 207,678.58 : x
  2. Step 2: Convert to fraction form
    607,255.81/909,886.71 = 207,678.58/x
  3. Step 3: Cross multiply
    607,255.81x = 909,886.71 × 207,678.58
  4. Step 4: Simplify right side
    607,255.81x = 188,963,979,893.67
  5. Step 5: Solve for x
    x = 188,963,979,893.67/607,255.81
  6. Step 6: Final answer
    x = 311,176.90

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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.