Finding the Fourth Proportional to 315,615,357.21, 435,562,644.11 and 176,386,114.88
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Solution
The fourth proportional to 315,615,357.21, 435,562,644.11 and 176,386,114.88 is: 243,420,355.90
Step by Step Solution
- Step 1: Write the proportion equation
315,615,357.21 : 435,562,644.11 = 176,386,114.88 : x - Step 2: Convert to fraction form
315,615,357.21/435,562,644.11 = 176,386,114.88/x - Step 3: Cross multiply
315,615,357.21x = 435,562,644.11 × 176,386,114.88 - Step 4: Simplify right side
315,615,357.21x = 76,827,202,578,363,280 - Step 5: Solve for x
x = 76,827,202,578,363,280/315,615,357.21 - Step 6: Final answer
x = 243,420,355.90
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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.