Home / 286,915,872.75-430,537,810.80-155,768,811.39

Finding the Fourth Proportional to 286,915,872.75, 430,537,810.80 and 155,768,811.39

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Solution

The fourth proportional to 286,915,872.75, 430,537,810.80 and 155,768,811.39 is: 233,742,254.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,915,872.75 : 430,537,810.80 = 155,768,811.39 : x
  2. Step 2: Convert to fraction form
    286,915,872.75/430,537,810.80 = 155,768,811.39/x
  3. Step 3: Cross multiply
    286,915,872.75x = 430,537,810.80 × 155,768,811.39
  4. Step 4: Simplify right side
    286,915,872.75x = 67,064,363,046,768,704
  5. Step 5: Solve for x
    x = 67,064,363,046,768,704/286,915,872.75
  6. Step 6: Final answer
    x = 233,742,254.84

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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.