Home / 286,249,666.50-395,041,413.47-215,560,560.89

Finding the Fourth Proportional to 286,249,666.50, 395,041,413.47 and 215,560,560.89

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Solution

The fourth proportional to 286,249,666.50, 395,041,413.47 and 215,560,560.89 is: 297,486,280.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,249,666.50 : 395,041,413.47 = 215,560,560.89 : x
  2. Step 2: Convert to fraction form
    286,249,666.50/395,041,413.47 = 215,560,560.89/x
  3. Step 3: Cross multiply
    286,249,666.50x = 395,041,413.47 × 215,560,560.89
  4. Step 4: Simplify right side
    286,249,666.50x = 85,155,348,662,281,408
  5. Step 5: Solve for x
    x = 85,155,348,662,281,408/286,249,666.50
  6. Step 6: Final answer
    x = 297,486,280.78

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1.5x scale

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.