Home / 390,742,475.70-539,225,677.50-214,541,883.78

Finding the Fourth Proportional to 390,742,475.70, 539,225,677.50 and 214,541,883.78

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Solution

The fourth proportional to 390,742,475.70, 539,225,677.50 and 214,541,883.78 is: 296,068,382.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,742,475.70 : 539,225,677.50 = 214,541,883.78 : x
  2. Step 2: Convert to fraction form
    390,742,475.70/539,225,677.50 = 214,541,883.78/x
  3. Step 3: Cross multiply
    390,742,475.70x = 539,225,677.50 × 214,541,883.78
  4. Step 4: Simplify right side
    390,742,475.70x = 115,686,492,633,396,768
  5. Step 5: Solve for x
    x = 115,686,492,633,396,768/390,742,475.70
  6. Step 6: Final answer
    x = 296,068,382.19

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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.