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Finding the Fourth Proportional to 314,928,279.60, 472,392,419.40 and 249,879,901.20

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Solution

The fourth proportional to 314,928,279.60, 472,392,419.40 and 249,879,901.20 is: 374,819,851.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,279.60 : 472,392,419.40 = 249,879,901.20 : x
  2. Step 2: Convert to fraction form
    314,928,279.60/472,392,419.40 = 249,879,901.20/x
  3. Step 3: Cross multiply
    314,928,279.60x = 472,392,419.40 × 249,879,901.20
  4. Step 4: Simplify right side
    314,928,279.60x = 118,041,371,087,300,944
  5. Step 5: Solve for x
    x = 118,041,371,087,300,944/314,928,279.60
  6. Step 6: Final answer
    x = 374,819,851.80

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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.