Home / 385,365,366.71-531,804,732.29-209,153,364.49

Finding the Fourth Proportional to 385,365,366.71, 531,804,732.29 and 209,153,364.49

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Solution

The fourth proportional to 385,365,366.71, 531,804,732.29 and 209,153,364.49 is: 288,631,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,365,366.71 : 531,804,732.29 = 209,153,364.49 : x
  2. Step 2: Convert to fraction form
    385,365,366.71/531,804,732.29 = 209,153,364.49/x
  3. Step 3: Cross multiply
    385,365,366.71x = 531,804,732.29 × 209,153,364.49
  4. Step 4: Simplify right side
    385,365,366.71x = 111,228,749,010,157,248
  5. Step 5: Solve for x
    x = 111,228,749,010,157,248/385,365,366.71
  6. Step 6: Final answer
    x = 288,631,928.60

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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.