Home / 385,442,267.76-531,911,009.40-209,230,385.16

Finding the Fourth Proportional to 385,442,267.76, 531,911,009.40 and 209,230,385.16

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Solution

The fourth proportional to 385,442,267.76, 531,911,009.40 and 209,230,385.16 is: 288,738,300.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,442,267.76 : 531,911,009.40 = 209,230,385.16 : x
  2. Step 2: Convert to fraction form
    385,442,267.76/531,911,009.40 = 209,230,385.16/x
  3. Step 3: Cross multiply
    385,442,267.76x = 531,911,009.40 × 209,230,385.16
  4. Step 4: Simplify right side
    385,442,267.76x = 111,291,945,367,606,368
  5. Step 5: Solve for x
    x = 111,291,945,367,606,368/385,442,267.76
  6. Step 6: Final answer
    x = 288,738,300.59

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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.