Home / 208,203,428.40-312,249,155.40-87,009,802.80

Finding the Fourth Proportional to 208,203,428.40, 312,249,155.40 and 87,009,802.80

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Solution

The fourth proportional to 208,203,428.40, 312,249,155.40 and 87,009,802.80 is: 130,491,306.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,203,428.40 : 312,249,155.40 = 87,009,802.80 : x
  2. Step 2: Convert to fraction form
    208,203,428.40/312,249,155.40 = 87,009,802.80/x
  3. Step 3: Cross multiply
    208,203,428.40x = 312,249,155.40 × 87,009,802.80
  4. Step 4: Simplify right side
    208,203,428.40x = 27,168,737,435,820,552
  5. Step 5: Solve for x
    x = 27,168,737,435,820,552/208,203,428.40
  6. Step 6: Final answer
    x = 130,491,306.72

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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.