Home / 290,012,812.67-435,007,421.49-71,657,656.10

Finding the Fourth Proportional to 290,012,812.67, 435,007,421.49 and 71,657,656.10

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Solution

The fourth proportional to 290,012,812.67, 435,007,421.49 and 71,657,656.10 is: 107,483,569.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,012,812.67 : 435,007,421.49 = 71,657,656.10 : x
  2. Step 2: Convert to fraction form
    290,012,812.67/435,007,421.49 = 71,657,656.10/x
  3. Step 3: Cross multiply
    290,012,812.67x = 435,007,421.49 × 71,657,656.10
  4. Step 4: Simplify right side
    290,012,812.67x = 31,171,612,207,903,132
  5. Step 5: Solve for x
    x = 31,171,612,207,903,132/290,012,812.67
  6. Step 6: Final answer
    x = 107,483,569.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.