Finding the Fourth Proportional to 386,688,297,840.15, 533,605,807,034.80 and 213,063,721,083.99
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Solution
The fourth proportional to 386,688,297,840.15, 533,605,807,034.80 and 213,063,721,083.99 is: 294,014,686,955.59
Step by Step Solution
- Step 1: Write the proportion equation
386,688,297,840.15 : 533,605,807,034.80 = 213,063,721,083.99 : x - Step 2: Convert to fraction form
386,688,297,840.15/533,605,807,034.80 = 213,063,721,083.99/x - Step 3: Cross multiply
386,688,297,840.15x = 533,605,807,034.80 × 213,063,721,083.99 - Step 4: Simplify right side
386,688,297,840.15x = 113,692,038,838,860,004,720,640 - Step 5: Solve for x
x = 113,692,038,838,860,004,720,640/386,688,297,840.15 - Step 6: Final answer
x = 294,014,686,955.59
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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.