Home / 399,450,691-551,258,977.74-223,238,681.18

Finding the Fourth Proportional to 399,450,691, 551,258,977.74 and 223,238,681.18

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Solution

The fourth proportional to 399,450,691, 551,258,977.74 and 223,238,681.18 is: 308,078,894.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,450,691 : 551,258,977.74 = 223,238,681.18 : x
  2. Step 2: Convert to fraction form
    399,450,691/551,258,977.74 = 223,238,681.18/x
  3. Step 3: Cross multiply
    399,450,691x = 551,258,977.74 × 223,238,681.18
  4. Step 4: Simplify right side
    399,450,691x = 123,062,327,179,312,576
  5. Step 5: Solve for x
    x = 123,062,327,179,312,576/399,450,691
  6. Step 6: Final answer
    x = 308,078,894.22

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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.