Home / 280,032,497.80-420,048,746.70-252,291,277.60

Finding the Fourth Proportional to 280,032,497.80, 420,048,746.70 and 252,291,277.60

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Solution

The fourth proportional to 280,032,497.80, 420,048,746.70 and 252,291,277.60 is: 378,436,916.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,032,497.80 : 420,048,746.70 = 252,291,277.60 : x
  2. Step 2: Convert to fraction form
    280,032,497.80/420,048,746.70 = 252,291,277.60/x
  3. Step 3: Cross multiply
    280,032,497.80x = 420,048,746.70 × 252,291,277.60
  4. Step 4: Simplify right side
    280,032,497.80x = 105,974,634,959,221,776
  5. Step 5: Solve for x
    x = 105,974,634,959,221,776/280,032,497.80
  6. Step 6: Final answer
    x = 378,436,916.40

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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.