Home / 287,821,466.51-397,193,624.06-155,662,462.40

Finding the Fourth Proportional to 287,821,466.51, 397,193,624.06 and 155,662,462.40

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Solution

The fourth proportional to 287,821,466.51, 397,193,624.06 and 155,662,462.40 is: 214,814,198.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,821,466.51 : 397,193,624.06 = 155,662,462.40 : x
  2. Step 2: Convert to fraction form
    287,821,466.51/397,193,624.06 = 155,662,462.40/x
  3. Step 3: Cross multiply
    287,821,466.51x = 397,193,624.06 × 155,662,462.40
  4. Step 4: Simplify right side
    287,821,466.51x = 61,828,137,567,995,208
  5. Step 5: Solve for x
    x = 61,828,137,567,995,208/287,821,466.51
  6. Step 6: Final answer
    x = 214,814,198.26

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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.