Home / 385,374,063.66-531,816,466.93-209,162,061.52

Finding the Fourth Proportional to 385,374,063.66, 531,816,466.93 and 209,162,061.52

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Solution

The fourth proportional to 385,374,063.66, 531,816,466.93 and 209,162,061.52 is: 288,643,785.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,374,063.66 : 531,816,466.93 = 209,162,061.52 : x
  2. Step 2: Convert to fraction form
    385,374,063.66/531,816,466.93 = 209,162,061.52/x
  3. Step 3: Cross multiply
    385,374,063.66x = 531,816,466.93 × 209,162,061.52
  4. Step 4: Simplify right side
    385,374,063.66x = 111,235,828,573,361,712
  5. Step 5: Solve for x
    x = 111,235,828,573,361,712/385,374,063.66
  6. Step 6: Final answer
    x = 288,643,785.51

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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.