Home / 305,427,413.72-458,282,019.95-139,481,790.47

Finding the Fourth Proportional to 305,427,413.72, 458,282,019.95 and 139,481,790.47

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Solution

The fourth proportional to 305,427,413.72, 458,282,019.95 and 139,481,790.47 is: 209,287,031.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,427,413.72 : 458,282,019.95 = 139,481,790.47 : x
  2. Step 2: Convert to fraction form
    305,427,413.72/458,282,019.95 = 139,481,790.47/x
  3. Step 3: Cross multiply
    305,427,413.72x = 458,282,019.95 × 139,481,790.47
  4. Step 4: Simplify right side
    305,427,413.72x = 63,921,996,679,845,440
  5. Step 5: Solve for x
    x = 63,921,996,679,845,440/305,427,413.72
  6. Step 6: Final answer
    x = 209,287,031.25

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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.