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Finding the Fourth Proportional to 478,506.06, 717,721.40 and 208,627.83

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Solution

The fourth proportional to 478,506.06, 717,721.40 and 208,627.83 is: 312,925.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,506.06 : 717,721.40 = 208,627.83 : x
  2. Step 2: Convert to fraction form
    478,506.06/717,721.40 = 208,627.83/x
  3. Step 3: Cross multiply
    478,506.06x = 717,721.40 × 208,627.83
  4. Step 4: Simplify right side
    478,506.06x = 149,736,653,594.82
  5. Step 5: Solve for x
    x = 149,736,653,594.82/478,506.06
  6. Step 6: Final answer
    x = 312,925.31

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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.